He is one of the few genuine trainers of traders out there, although he doesn't really train 1 on 1, he does do 1 month webinars where you can see him trade & ask questions.
I've done one and I'll do one again. It's a good experience both from the perspective of getting access to John and also from the people you will meet in there.
In terms of what I do vs what John does, there are many similarities but it is different.
The US Treasuries are some of the least volatile instruments to trade. This makes them much safer to trade. It also means that you really don't need a chart to trade them, a volume profile is enough. There is spreading activity across the treasuries too which can tip your hand. The liquidity is massive and you can trade size, like 100's of contracts without making so much as a dent in the market. You can make a lot of money trading 100 contracts for a 1 tick trade on ZB when the $/tick is $31.25 and retail commissions at just $2 per r/t.
Treasuries are the exact opposite of something like Crude Oil or Nasdaq Futures. These instruments are very thin and very volatile. If you placed a market order for a few hundred contracts in Crude, you could move it 10 ticks before you'd finished getting filled.
The ES is somewhere in the middle. On the Treasuries, you can join the bid/offer and often get a fill. On the ES, it's almost impossible to do that if you have the direction right. On the ES, the chart is more relevant. Being more volatile, there are more intra-day swings and more points of interest (or points of pain).
On the ES, I will have an expectation that the market will behave a certain way. I will then use the DOM/T&S to confirm that and pick my spot for entry. Once in, I will be very focused on the DOM/T&S but once I have a bit of breathing room in the trade, I like to walk away from the screen and give the trade time to develop.
This is different in a couple of respects. Someone that scalps the order book will be focused on the DOM and be out as soon as the momentum stops. I won't do that on the ES, momentum will stop-start-stop-start but I know that the instrument likes to run a bit and I know it won't do that in a single move.
So - the DOM/T&S is refining/rejecting an entry and that entry is most often defined by the price action I see on the chart. Now, there are times that the action on the DOM superceeds what I see on the chart but that is not the norm.
Of late, volatility has been low on the ES but it looks to be picking up again and now I'm having to adjust back to that.
I do know a trader that trades CL full time using DOM/T&S. It's not something I could do and I don't really get how he does it. It seems that when it comes to reading order flow, some markets suit people better than others. I'm a 'thickie', the CL guys are 'thinnies' and the treasuries guys are 'ultra-thickies'.